prEN 17450-4

Fixed firefighting systems - Components for water mist systems - Part 4: Requirements and test methods for deluge valves

This document specifies requirements and describes test methods for deluge valves and their actuators used in water mist systems.
Valves tested according to EN 12259-9 are considered to meet the requirements of this document and its technical documentation.

Ortsfeste Brandbekämpfungsanlagen - Bauteile für Wassernebelsysteme - Teil4: Anforderungen und Prüfverfahren für Sprühflutventile

Dieses Dokument legt Anforderungen für in Wassernebelsystemen verwendete Sprühflutventile und ihre Aus
löseeinrichtungen fest und beschreibt Prüfverfahren für diese Bauteile.
Es wird davon ausgegangen, dass nach EN12259-9 geprüfte Ventile den Anforderungen dieses Dokumentes und der zugehörigen technischen Dokumentation gerecht werden.

Installations fixes de lutte contre l’incendie - Composants pour systèmes à brouillard d’eau - Partie 4 : Exigences et méthodes d’essai pour les vannes déluge

Le présent document spécifie les exigences et décrit les méthodes d'essai relatives aux vannes déluge et leurs déclencheurs utilisés dans les systèmes à brouillard d'eau.
Les vannes soumises à essai conformément à l'EN 12259-9 sont considérées comme satisfaisant aux exigences du présent document et de sa documentation technique.

Vgrajeni gasilni sistemi - Sestavni deli sistemov z vodno meglo - 4. del: Zahteve in preskusne metode za kontrolne poplavne (delužne) ventile

General Information

• Status: Not Published
• Publication Date: 01-Sep-2027
• ICS: 13.030.40 - Installations and equipment for waste disposal and treatment
• ICS: 13.220.20 - Fire protection
• Technical Committee: CEN/TC 191 - Fixed firefighting systems
• Drafting Committee: CEN/TC 191/WG 10 - Water mist systems
• Current Stage: 4020 - Submission to enquiry - Enquiry
• Start Date: 26-Mar-2026
• Due Date: 16-Apr-2026
• Completion Date: 26-Mar-2026
• Ref Project: oSIST prEN 17450-4:2026 - Fixed firefighting systems - Components for water mist systems - Part 4: Requirements and test methods for deluge valves

Overview

prEN 17450-4:2026 is a CEN draft standard focusing on fixed firefighting systems, specifically the components used in water mist systems. Part 4 of the standard addresses the requirements and test methods for deluge valves and their actuators, which are critical safety devices designed to control the water flow in fire suppression scenarios. Deluge valves, when actuated, allow water to enter a system of open nozzles, enabling fast and efficient distribution of water mist to suppress fires.

This standard applies to all types of deluge valves-including mechanically, electrically, pressure, and manually actuated variants-used within water mist firefighting systems. Valves tested according to EN 12259-9 are recognized as compliant with the requirements of prEN 17450-4.

Key Topics

• Design and Construction
  • Deluge valves must be made from materials resistant to media encountered in service.
  • Standardized threaded connections per international or relevant national norms.
• Performance Requirements
  • Valves must demonstrate suitable strength, leak resistance, and resilience under cycling (opening/closing and pressure changes).
  • Resistance to vibration, corrosion (salt spray), and extreme temperatures are tested for robust performance in challenging environments.
• Functional Testing
  • Correct operation must be assured across defined pressure ranges.
  • Different requirements are outlined for electrical, pressure, and manually actuated valves, including opening/closing dynamics and force requirements.
• Documentation and Marking
  • Installation, operation, and maintenance instructions are required for end users and testing authorities.
  • Technical data, design documents, and specific details (e.g., operating temperatures, hydraulic resistances) must be supplied.
  • Clear and permanent marking is essential for all valves, including manufacturer, model, working pressure, and nominal size.
• Testing Facilities
  • Test facilities should demonstrate compliance with quality management systems, such as EN ISO/IEC 17025, and have the equipment and expertise to conduct appropriate tests.

Applications

Deluge valves in water mist systems play a pivotal role in modern fire protection engineering for a variety of facilities, including:

• Critical infrastructure such as data centers and power plants
• Industrial facilities requiring rapid fire suppression
• Cultural heritage or archives where water damage must be minimized
• Marine, offshore, and transport fire suppression systems

By setting out uniform requirements and test methods, prEN 17450-4 strengthens the reliability and safety of water mist firefighting systems. This benefits designers, installers, manufacturers, and end-users by:

• Enhancing product consistency and system compatibility
• Providing clear guidelines for testing, installation, and ongoing maintenance
• Assuring performance under real-world conditions, including high temperatures, humidity, and mechanical stress

Related Standards

For a comprehensive approach to fixed firefighting systems, prEN 17450-4 is part of a broader standard series:

• EN 14972-1: Design, installation, inspection, and maintenance of water mist systems
• EN 12259-9: Deluge valves for sprinkler and water spray systems
• prEN 17450 (Parts 1-3, 5):
  • Part 1: Strainers and filters - characteristics and test methods
  • Part 2: Nozzles - characteristics and test methods
  • Part 3: Check valves - requirements and test methods
  • Part 5: Pressure switches and pressure sensors - requirements and test methods
• EN ISO 9227: Corrosion testing (salt spray)
• EN 60068-1/2-6: Environmental and vibration testing methodologies
• ISO 7-1, ISO 228-1: International pipe thread standards
• EN ISO/IEC 17025: General requirements for testing and calibration laboratories

By aligning with these standards, prEN 17450-4 supports integrative and compliant design of fire protection systems across diverse industries, ensuring safety, reliability, and regulatory acceptance.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2026
Vgrajeni gasilni sistemi - Sestavni deli sistemov z vodno meglo - 4. del: Zahteve in
preskusne metode za kontrolne poplavne (delužne) ventile
Fixed firefighting systems - Components for water mist systems - Part 4: Requirements
and test methods for deluge valves
Ortsfeste Brandbekämpfungsanlagen - Bauteile für Wassernebelsysteme - Teil4:
Anforderungen und Prüfverfahren für Sprühflutventile
Installations fixes de lutte contre l’incendie - Composants pour systèmes à brouillard
d’eau - Partie 4 : Exigences et méthodes d’essai pour les vannes déluge
Ta slovenski standard je istoveten z: prEN 17450-4
ICS:
13.220.20 Požarna zaščita Fire protection
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2026
ICS 13.220.20
English Version
Fixed firefighting systems - Components for water mist
systems - Part 4: Requirements and test methods for
deluge valves
Installations fixes de lutte contre l'incendie - Ortsfeste Brandbekämpfungsanlagen - Bauteile für
Composants pour systèmes à brouillard d'eau - Partie 4 Wassernebelsysteme - Teil4: Anforderungen und
: Exigences et méthodes d'essai pour les vannes déluge Prüfverfahren für Sprühflutventile
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 191.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 17450-4:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Requirements . 5
4.1 General design . 5
4.2 Strength . 5
4.3 Leak resistance . 5
4.4 Resistance to water cycling . 5
4.5 Function . 6
4.5.1 Operation . 6
4.5.2 Actuators . 6
4.6 Resistance against corrosion . 6
4.7 Vibration resistance . 6
4.8 Extreme temperature operation (optional test) . 7
5 Testing, assessment and sampling methods . 7
5.1 Test conditions . 7
5.2 Compliance . 7
5.3 Strength . 7
5.4 Leak resistance . 7
5.5 Water cycling . 7
5.5.1 General. 7
5.5.2 Testing method A . 7
5.5.3 Testing method B . 8
5.6 Function . 8
5.6.1 Operation . 8
5.6.2 Actuators . 8
5.7 Vibration resistance . 9
5.7.1 General. 9
5.7.2 Test method A . 9
5.7.3 Test method B . 9
5.8 Extreme operating temperature (optional test) . 10
5.8.1 Low temperature . 10
5.8.2 High temperature . 10
6 Documentation and marking . 10
6.1 Installation, operation, testing and maintenance documentation . 10
6.2 Testing authority documentation . 10
6.3 Design documentation . 11
6.4 Deluge valve specific documentation . 11
6.5 Marking . 11
7 Requirements on test facilities . 12
7.1 Test facility . 12
7.2 Test report . 12
Bibliography . 13
European foreword
This document (prEN 17450-4:2026) has been prepared by Technical Committee CEN/TC 191 “Fixed
firefighting systems”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
EN 17450, Fixed firefighting systems — Components for water mist systems, consists of the following parts:
— Part 1: Product characteristics and test methods for strainer and filter components
— Part 2: Product characteristics and test methods for nozzles
— Part 3: Requirements and test methods for check valves
— Part 4: Requirements and test methods for deluge valves
— Part 5: Requirements and test methods for pressure switches and pressure sensors

Document planned.
1 Scope
This document specifies requirements and describes test methods for deluge valves and their actuators
used in water mist systems.
Valves tested according to EN 12259-9 are considered to meet the requirements of this document and its
technical documentation.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 14972-1, Fixed firefighting systems — Water mist systems — Part 1: Design, installation, inspection and
maintenance
EN 60068-1, Environmental testing — Part 1: General and guidance
EN 60068-2-6, Environmental testing — Part 2-6: Tests — Test Fc: Vibration (sinusoidal)
EN ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests (ISO 9227)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 14972-1 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
3.1
deluge valve
water supply control valve intended to be operated by an actuator to admit water into a system of piping
with open nozzles
3.2
actuator
component which causes a valve to operate
Note 1 to entry: The actuator can be mechanical, electrical, hydraulic, pneumatic, manual or a combination of these.
[SOURCE: EN 12094-2:2003, 3.2, modified – Added Note 1 to entry.]
3.3
actuating voltage
voltage at which the valve actuates
Note to entry: Measured value.
3.4
actuating current
current at which the valve actuates
Note to entry: Measured value.
3.5
operating voltage
voltage specified by the manufacturer at which the valve actuates
Note to entry: See Table 2.
3.6
operating current
current specified by the manufacturer at which the valve actuates
Note to entry: See Table 2.
3.7
latching valve
valve that remains in the open position after its actuation and the actuating voltage is removed
Note to entry: Motorized valves need a reverse voltage to close.
3.8
non-latching valve
valve that returns to the closed position after its actuation and the actuating voltage is removed
4 Requirements
4.1 General design
All materials shall be resistant to media with which they come into contact.
A manufacturer's data sheet, giving the recommended method of installation and instructions on
maintenance and replacement, shall be available with each type of deluge valve.
The dimensions of all threaded connections shall conform to International Standards where applied. If
International Standards are not applicable, National Standards may be used.
EXAMPLE ISO 7-1, ISO 68-1, ISO 228-1.
The deluge valve shall be verified in accordance to 5.2 to meet the requirements by the manufacturer.
4.2 Strength
The deluge valve shall not show any sign of deterioration which could impair proper function, when
tested in accordance with 5.3.
4.3 Leak resistance
The deluge valve shall not show any pressure loss after reaching the specified working pressure, when
tested in accordance with 5.4.
4.4 Resistance to water cycling
The deluge valve shall not show any sign of damage which could impair proper function, when tested in
accordance with 5.5.
4.5 Function
4.5.1 Operation
The deluge valve shall be able to correctly operate in the pressure range specified by the manufacturer,
when tested in accordance with 5.6.1.
4.5.2 Actuators
4.5.2.1 General
Deluge valves shall function as intended when tested according to 5.6.2. In addition, depending on the
type of operation or control, requirements according to 5.6.2.2, 5.6.2.3 and 5.6.2.4 apply.
4.5.2.2 Electrically actuated valves
Electrically actuated valves shall meet the following requirements:
— The specifications according to Ta
...